The VideoLAN Forums

Please add the ability for new playlists to be created within the Library section, as shown below. Look at all the empty space in the left sidebar just begging for more playlists to be added, which would of course be restored when re-opening the app. There’s no need to limit the Library to displaying only 1 playlist at a time. You should be able to add all of them here if so desired and then never have to bother with searching your computer to re-open ones that had been previously played.

Here is a related topic which inquires about this feature among others:
Multiple playlists via web interface

Sorry, but no. The current v3.0 playlist code is no longer used in v4.0, so it will not get any major new feature.